Irrigating pipe



Dec. 29, 1936.

o. -KNol-:RZER

IRRIGATING PIPE :med ost; s, -1935 .Patented 29, 1936 UNITED STATE mmGA'riNG v PIPE Otto Knoerzer, Hammond, Ind., assignor tol Champion Corporation, Hammond, Ind., a corporation of Indiana Application october s, 1935, serial No. 44,068 2 claims. (o1. 2st-175) This invention relates to irrigating pipes. One of the objects of the invention is to provide a novel leak-proof joint between adjacent pipes, lby means of which the pipes may be connected without the aid of tools or other implements.

Another object is to provide novel locking means between adjacent pipes for preventing disconnection therebetween, said locking means permitting one pipe to be turned within the other to locate an outlet thereof so as to stand in a vertical position or lie in a horizontal position at either side of the pipe.

Other objects and advantages will appear in the course of this specication, and with all of said objects and advantages in view, this invention consists in the several novel features hereinafter fully set forth and claimed.

The invention is clearly illustrated in the drawing accompanying this specification, in which: Fig. 1 is a view partly in side elevation and part- 1y in central longitudinal section of several irrigating pipes, partly broken away, and illustrating a simple embodiment of the present inven- I tion; 5 Fig. 2 is a vertical cross-section, taken on the line 2-2 of Fig. 1;

Fig. 3 is a fragmental, -side elevation of one end portion of one of the pipes; and

Fig. 4 is a vertical cross-section,

line 4-4' of Fig. 1.

Referring to said drawing, the .reference characters A, B, C,D designate fragments of four lengths of irrigating pipe embodying a simple form of the present invention. The pipes may 35. be made of any desirable lengths 'and they are 'shown as broken away between their ends to enable the view to be made as large as possible upon the sheet of drawing. One end of each pipe is slightly tapered, as at I0, and the other end is 4o formed with a'bell or flange I I, which is adapted to receive the tapered end of an adjacent pipe. The pipes, including their iianges, are desir-ably constructed from light gauge sheet metal, and the flanged end is usually'formed of a separate piece of sheet metal welded to an out-turned flange I2 on the end of the pipe proper.

The end edge of the bellor ange s inwardly, radially, as at I3, and then turned into the hollow of the bell or flange Il, as at I4, to

form a tapered lip which provides an` annular tapered groove I5 in the interior of the bell.

The bell or flange I I provides an annular cavity I6, around an-adjacent pipe, in which cavity is received a resilient gasket I1, desirably 'made of rubber.

taken on the I I isturnedv The gasket is somewhat V-shaped or' tapered in cross-section, and the apex end thereof is intended to be held in the groove I5. The gasket is formed with two annular diverging lips I8, I9 that extend from a thickened apex portion 20. The lip I8 ts against the internal face of the 6 bell or fiangevl I, whereas the lip I9 is of tapered or conical form, and when the pipe is notconnected to another one, said lip I9 occupies theV position indicated in the pipe C. When the tapered end of a pipe is inserted into the bell, it 10 spreads the tapered lip I9 outwardly, as is indicated in the pipe A, the lip I9 hugging the inserted pipe and aiording a leak-proof joint. The iiov.r of water through the pipesis in the direction of the' arrow,a, in Fig. 1, and the pressure there- 16 of is against the inner or opposing faces of the lips and as a consequence it seats the apex portion in the groove and 'tightly presses the lips against the internal face of the bell and against the external face of the inserted pipe, thereby 20 eliminating leakage at the joint.

s Locking means are provided for preventing ac cidental disconnection, between adjacent pipes. As shown, said means comprises a lock-yoke 2i, welded or otherwise rigidly fastened to the bell of 25 each pipe, and a lock segment 25, welded or otherwise rigidly fastened to the tapered end of each pipe in position to engage with the lock-yoke.

The lock-yoke is'of' U formation, one leg 22 s of which is welded to the end edge of the bell, and 3o one leg 23 welded to the cylindrical face of the bell. 'I'his brings the leg 23 somewhat higher than the leg 22 (see Fig. 3), but at the place where it joins the U bend of the yoke it is bent down as at 24, the purpose of which will be presently 35 explained.

The Ilock segment 25 is substantially semicircular, and fits upon'the external face of the y pipe. At its middle portion and at its ends the lock segment is doubled upon itself to form threer i0- legs 26, that are disposed approximately ninety degrees apart..

Each lug is adapted to engage with the lockyoke 2| andprevents accidental. disconnection between adjacent pipes. yoke permits any lug to enter the yoke. When one pipe is turned within the other and 4when any -lug is engaged with the'yoke, the pipes cannot be disconnected by any endwise movement of -one relative to the other. y

The pipes are joined by inserting thetapered end of one pipe into the bell of the other. as far as it will go, and then turning lthe -first mentioned pipe, bringing a lug into the opening in the yoke. The lock'segment also 'serves to limit 5v5 The upper leg 23 of the 45 the distance one pipe can be inserted into the bell, and by pushing the pipe in until the lock segment abutsagainst the edge of the bell, the

attendant knows that proper contact has been made between the gasket and the inserted pipe.

Desirably each pipe is provided with a threaded nipple 21, forconnection with a hose, sprinkler pipe 'or other pipe connection. A screw cap 28 is provided for-each nipple. The' nipple on each purpose of this arrangement is to enable the at-V tendant to couple the pipes in such manner that any nipple may stand upright or vextend hori- .zontally in either direction from the pipe. For

instance, in Fig. 1, vone of the end lugs of pipe B is engaged with the lock-yoke of pipe A, and therefore the nipple assumes a horizontal position. When the middle lug is lock-yoke, the'nipple stands vertical. When a nipple is connected to a sprinkler pipe it should stand upright, whereas when connected to a hose it is preferable to have the nipple lie horizontally.

A long line of irrigating pipe may be"quickly and easily laid from the source of supply to the place or places where it is necessary to furnish water. 'I'he form o1' joint shown. enables the pipes to be laid on uneven ground, because the 'gasket permits considerable angular adjustment between any two adjacent pipes, and the lockingy means allows some angular adjustment but prevents disconnection between the pipes.

'I'he tapered lip I4 of the bell facilitates the insertion of the tapered end of an adjacent pipe, besides providing, with the wall of the bell, a groove to hold the gasket.

v 'turned tapered lip,

` twolips that against the cylindrical wall of engaged with the.

' I claim as new and desire to secure by letters Patent:

1. Irrigating pipe,

drical wall terminating -at its outer end in an inextending into the hollow oi- -the bell and forming with the cylindrical wall.

an annular groove of tapered cross section, an'

endwi'se movable gasket of ,tapered cross section,

loosely and removably held in said annularolo groove, said gasket having an apex portion and diverge' therefrom, one lip bearing the bell and the other lip being tapered and extending into the hollow of the bell, the' other end pipe being insertable into the bell oi' an adjacent pipe with the tapered lip of the gasket hugging the external side thereof, whereby pressure applied in the pipes serves to seat the apex. part oi' the gasket in the annmar groove vin the ben and ao' to press the lips of the gasket'against the cylindrical wall of the bell and theimerted pipe.

2. Irrigating pipe, comprising lengths o! pipe having a Abell and spigot slip ioint connection with each other, there being a lateral outlet leading from one' of the pipes, lock yoke secured to the end or the bell and proiectingendwise therefrom, one leg of the lock yoke having an odset part raised above the plane of the remainder. o1"

the yoke to -provide a lateral entrance thereto. 30

and a lock segment secured on the other end of an adjacent pipe, said lock segment having a plurality of circumferentially` disposed lugs thereon, each of which may enter the .yoke through the entrance thereto below the part thereof, said lug co-operating with the lock yoke to locate the lateral outlet of the pipe in a vertical or horizontal' position.-

' 0'1'10 KNOIIRZER.

comprising lengths of pipe, 4each having on one end a bell formed oi' a cylinof a length of 15 oitset. 36 

